| DX旋挖挤扩灌注桩单桩抗拔承载性状的数值分析 |
| |
| 引用本文： | 陈立宏,张清林,袁希雨.DX旋挖挤扩灌注桩单桩抗拔承载性状的数值分析[J].中国工程科学,2012,14(1):31-36. |
| |
| 作者姓名： | 陈立宏 张清林 袁希雨 |
| |
| 作者单位： | 1. 北京交通大学土木建筑工程学院,北京,100044
2. 北京交通大学土木建筑工程学院,北京100044;中国建筑股份有限公司技术中心,北京101300 |
| |
| 基金项目： | 中央高校基本科研业务费专项资金（2011JBM269）；铁道部重点科技项目（2009J010-F） |
| |
| 摘 要： | 总结了DX桩的抗拔研究现状，采用FLAC3D对具有两个承力盘的DX单桩和相同直径与长度的普通直孔桩做了抗拔的数值计算分析，对DX单桩抗拔的性状进行了研究。模型参数依据土工试验获取并采用现场大比尺试验结果进行校验。通过模拟分级加载，得到了DX桩和直孔桩的抗拔承载力曲线，同时得到了沿桩身的轴力分布，依据这些计算结果展开分析，可以发现DX单桩的抗拔承载力比相同直径的普通直孔桩高出一倍以上，其上下承力盘的发挥作用是由上而下，但当荷载增大到一定程度时，下盘将发挥更大的作用。
|
| 关 键 词： | DX桩 抗拔 数值分析 |
| 收稿时间： | 2011/11/15 0:00:00 |
| 修稿时间： | 2011/11/21 0:00:00 |
Numerical analysis on uplift bearing characteristic of cast in situ DX pile |
| |
| Chen Lihong,Zhang Qinglin and Yuan Xiyu.Numerical analysis on uplift bearing characteristic of cast in situ DX pile[J].Engineering Science,2012,14(1):31-36. |
| |
| Authors: | Chen Lihong Zhang Qinglin and Yuan Xiyu |
| |
| Affiliation: | 1 (1.School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China; 2.Technology Center of China State Construction Engineering Co.,Ltd,Beijing 101300,China) |
| |
| Abstract: | This paper analyzes DX single pile with 2 bearing plates on its resistance of uplift load by numerical analysis method. The parameters for analysis are drawn from lab test and verified by large scale loading test of DX piles. The Q s curve and axial force of DX pile are obtained,and the conclusions based on the analysis are drawn.The uplift bearing capacity of DX single pile is about more than twice larger than that of the normal single pile and its bearing plates work out from the upper to the lower order, while when the bearing capacity reaches certain level, the lower plate will play a more important role. |
| |
| Keywords: | DX pile uplift bearing capacity numerical analysis |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《中国工程科学》浏览原始摘要信息 |
|
点击此处可从《中国工程科学》下载全文 |
